This morning, we got our first official look at photos from the upcoming Batman v Superman: Dawn of Justice, which will see the first on screen appearance of the title characters together in a movie ever. Speaking with EW, director Zack Snyder revealed the secret origin of the film in what would have been a scene at the end of Man of Steel, which he pitched to Christopher Nolan and David Goyer .

“I said, ‘What about at the end of the movie we do a scene where there’s a crate full of kryptonite delivered to Wayne Manor,’” says Snyder. “Everyone was like…‘Okaay.’ Once you say it out loud it’s a problem because you can’t unsay it.”

The Kryptonite has made its way into the film though, as EW reports Batman’s reinforced mech-suit seen in the picture above is equipped with strength-augmenting armor and the glowing green gem.

Ben Affleck also offered some commentary about one of the released photos, and provide some context for the scene it takes place, referring to the image of him and co-star Gal Gadot.

“I love the fact that there was this Thomas Crowne Affair, Bond-y sexy scene that they wrote about two people who are pretending to be two different people who each know the secrets of the other person.”

The man of steel, Henry Cavill, also chimed in about the movie, referring to the evolution of the film’s perspective as a sequel.

“I like to think that Man of Steel was the perspective of the world from Clark, Kal-El, looking at the world and trying to exist within it,” says Cavill. “Batman v Superman is definitely more mankind’s perspective of Superman.”

Fearing the actions of a god-like Super Hero left unchecked, Gotham City’s own formidable, forceful vigilante takes on Metropolis’s most revered, modern-day savior, while the world wrestles with what sort of hero it really needs. And with Batman and Superman at war with one another, a new threat quickly arises, putting mankind in greater danger than it’s ever known before.

Batman v Superman: Dawn of Justice stars Henry Cavill in the role of Clark Kent/Superman, and Ben Affleck as Bruce Wayne/Batman. The film also stars Gal Gadot as Diana Prince/Wonder Woman, with Amy Adams, Laurence Fishburne and Diane Lane returning from Man of Steel, Jesse Eisenberg as Lex Luthor, Jeremy Irons as Alfred, and Holly Hunter in a role newly created for the film. Jason Momoa will also be making an appearance as Aquaman.

Directed by Zack Snyder, written by Chris Terrio, from a screenplay by David S. Goyer, the film is produced by Charles Roven and Deborah Snyder with Benjamin Melniker, Michael E. Uslan, Wesley Coller, David S. Goyer and Geoff Johns serving as executive producers. Batman v Superman: Dawn of Justice is set to open worldwide on March 25, 2016.